/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlets;

import data.DataProvider;
import data.PhotoCache;
import entities.ArtPhoto;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.json.JSONArray;

/**
 *
 * @author bertram
 */
public class PhotoInfo extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("application/json;charset=UTF-8");
        DataProvider prov = new DataProvider();
        PrintWriter out = response.getWriter();
        ArrayList<ArtPhoto> photos = new ArrayList<ArtPhoto>();
        try {
            JSONArray phtArr = new JSONArray();
            if (request.getParameterMap().containsKey("cacheID")) {
                String cacheID = request.getParameter("cacheID");
                photos.addAll(PhotoCache.getPhotos(cacheID));
            }
            if (request.getParameterMap().containsKey("workID")) {
                int workID = Integer.parseInt(request.getParameter("workID"));
                photos.addAll(prov.getPhotosByWorkID(workID));

            }
            for (ArtPhoto p : photos) {
                phtArr.put(p.toJson());
            }
            out.write(phtArr.toString());

        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
